Cheap flights from Ontario to Milwaukee (ONT - MKE)

ONT — MKE
Aug 16 — Aug 231

The best prices from Ontario to Milwaukee-Mitchell are usually found in September or August, booked 38 days in advance, depart on a Saturday or Sunday and return on a Saturday

How to find the cheapest flight from Ontario (ONT) to Milwaukee (MKE)

All the information you need to plan the best ONT to MKE flight in 2022: compare Ontario to Milwaukee flight prices with the expected peak season, weather and rainfall in Milwaukee.

ONT - MKE

Price

$257 - $772

MKE

Temperature

21.2 - 73.4 °F

MKE

Rainfall

1.4 - 4 inches

Popular inJuneHigh demand for flights, 40% potential price rise
Cheapest inSeptemberBest time to find cheap flights, 44% potential price drop
Round-trip from$257From Ontario to Milwaukee-Mitchell
One-way from$221One-way flight from Ontario to Milwaukee-Mitchell

What is the cheapest day to fly round-trip from Ontario to Milwaukee?

Travelers have found that booking a Friday departure is the best way to save up to 124% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Ontario to Milwaukee?

To save on the cost of your flight from Ontario to Milwaukee, book at least 47 days before your planned departure. Booking around this time can save you about 21% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $269 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $277.

What is the cheapest month to fly from Ontario to Milwaukee?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to Milwaukee. Flights to Milwaukee from Ontario in October are about $265 on average during October, but can be found for as low as $74.

When is the cheapest time to fly from Ontario to Milwaukee (ONT - MKE)?

One of the essential ways to save on airfare from Ontario to Milwaukee is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.

Cheap flights from Ontario to Milwaukee in August, September 2022

The best prices found for ONT to MKE flights for August, September
Aug 29 - Sep 4
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

21h 47m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$164

Frontier

Pick Dates

Deal found 8/11/22

Sep 14 - Oct 4
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

7h 02m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

11h 07m
$187

Multiple Airlines

Pick Dates

Deal found 8/10/22

Sep 27 - Sep 28
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

9h 58m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

14h 28m
$193

Multiple Airlines

Pick Dates

Deal found 8/10/22

Ontario to Milwaukee 2022 flight deals

Cheap flights to Milwaukee from Ontario found for this year
Aug 29 - Sep 4
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

21h 47m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$164

Frontier

Pick Dates

Deal found 8/11/22

Oct 17 - Oct 23
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

18h 41m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 39m
$171

Frontier

Pick Dates

Deal found 8/8/22

Sep 14 - Oct 4
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

7h 02m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

11h 07m
$187

Multiple Airlines

Pick Dates

Deal found 8/10/22

Cheap Frontier flights from Ontario to Milwaukee

Aug 29 - Sep 4
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

21h 47m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$164

Frontier

Pick Dates

Deal found 8/11/22

Oct 17 - Oct 23
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

18h 41m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 39m
$171

Frontier

Pick Dates

Deal found 8/8/22

Sep 1 - Sep 6
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

6h 15m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

19h 50m
$206

Frontier

Pick Dates

Deal found 8/10/22

Cheap United Airlines flights from Ontario to Milwaukee

Aug 19 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

6h 16m
MKE

Milwaukee-Mitchell

ONT

Ontario

2 stops

17h 21m
$558

United Airlines

Pick Dates

Deal found 8/9/22

Aug 19 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

2 stops

18h 39m
MKE

Milwaukee-Mitchell

ONT

Ontario

2 stops

17h 21m
$583

United Airlines

Pick Dates

Deal found 8/9/22

Aug 19 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

2 stops

18h 39m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

7h 49m
$638

United Airlines

Pick Dates

Deal found 8/11/22

Last minute flights from Ontario to Milwaukee

Late deals on return flights to Milwaukee from Ontario, departing today and this week
Aug 18 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

6h 15m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$228

Frontier

Pick Dates

Deal found 8/10/22

Aug 18 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

6h 15m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$244

Frontier

Pick Dates

Deal found 8/8/22

Aug 18 - Aug 21
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

6h 41m
MKE

Milwaukee-Mitchell

ONT

Ontario

1 stop

12h 07m
$248

Frontier

Pick Dates

Deal found 8/9/22

One-way flights to Milwaukee from Ontario

The cheapest one-way flights from Ontario to Milwaukee
Sep 14
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

7h 02m
$84

Frontier

Pick Dates

Deal found 8/8/22

Sep 17
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

21h 10m
$86

Frontier

Pick Dates

Deal found 8/9/22

Oct 7
ONT

Ontario

MKE

Milwaukee-Mitchell

1 stop

11h 03m
$90

Frontier

Pick Dates

Deal found 8/9/22

Related info for your journey

Useful info, stats and facts about Ontario to Milwaukee flights.

Which airlines flying from Ontario to Milwaukee-Mitchell have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, Frontier, and United Airlines flying from Ontario to Milwaukee-Mitchell have implemented new flexible cancellation policies.

Can I find flights from Ontario to Milwaukee for under $200 on Cheapflights?

Yes, there are multiple flights from Ontario to Milwaukee for under $200. The cheapest flight booked recently is on Frontier for just $164, but on average you can expect to pay $232.

Are there last-minute flights available from Ontario to Milwaukee for under $300?

There are currently 20+ open flights from Ontario to Milwaukee within the next 7 days for less than $300.

How popular is this Ontario to Milwaukee flight route?

Within the past month, 11 users have taken a look at flights from Ontario to Milwaukee-Mitchell.

What is the cheapest airline to fly from Ontario to Milwaukee round-trip?

Frontier, at $164, was found to be the cheapest airline from Ontario to Milwaukee.. Frontier is currently priced 64% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Ontario to Milwaukee one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $84. Users have also found prices from $219 and $248 on Delta and American Airlines, respectively.

What are the most popular airlines that fly from Ontario to Milwaukee?

Undisclosed Carrier, American Airlines and Alaska Airlines are the most popular airlines when flying from Ontario to Milwaukee.

What are the cheapest flights from Ontario to Milwaukee?

On average you can expect to pay $796 for a flight from Ontario to Milwaukee. The cheapest flight overall is $81 while the most popular route, (Ontario - Milwaukee-Mitchell) is currently priced at $251.

Alternative routes for Ontario to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Ontario to Milwaukee

The chart below displays the airlines Cheapflights users traveling from Ontario to Milwaukee choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
FrontierCheapest$147Average$407FlexibilityNo cancel feeOn-time62%COVID-19 safety
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American AirlinesCheapest$276Average$576FlexibilityNo cancel feeOn-time71%COVID-19 safety
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DeltaCheapest$291Average$480FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
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United AirlinesCheapest$347Average$751FlexibilityNo cancel feeOn-time69%COVID-19 safety
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